Anyone use radiolink Pixhawk. If is it, please help me   what is the difference between 3d px4 pixhawk 2.4.8 and radiolink Pixhawk??? Please help me about radiolink Pixhawk application.   

I personally do not own 3dr or radiolink version but I think I can answer as I own a pixhawk clone.

Since pixhawk hardware and software is open source any manufacturer can take them to make their own copy of hardware modify and sell it. This is one which might be made by radiolink and sold under their brand.

The most obvious difference would be their source of hardware components.

But functionality wise they are almost same. You can use it without any issue. Not just radiolink pixhawk but any pixhawk clone will work just fine.

I use one of those clones and it works fine for me. Think no further just buy it.

Sorry to say, Before buying, Do more research. Radiolink has their own version of Mission Planner & firmware for Mini Pix...etc.
Don't know about this version. Be carefull.

Very very short application available in Google.
Okk, then radiolink mini pix mission planner work on radiolink Pixhawk.

1) But the compass calibration, is it same as normal 3dr mission planner set up???

2) I searched, some one saying that radiolink Pixhawk have booting problem.

Hi friend, Read here....
https://discuss.ardupilot.org/search?context=topic&context_id=44796&q=Radiolink%20&skip_context=true

and also read this...
https://discuss.ardupilot.org/t/copter-3-6-9-released/42896/25
and ask there.

Must see it and comment section

I am using flysky i6 transmitter(it is 10 channel after firmware update and use i6b ppm receiver) can I use it in radiolink Pixhawk without facing any problem???

yes you can use i6 with pixhawk , how far do you want to fly ?

Before finalizing, see what all boards are supported by ARDUPILOT.
http://ardupilot.org/copter/docs/common-autopilots.html

I want to fly 500m to 1km

i6 should be good

Is Radiolink Pixhawk also closed hardware like radiolink mini pix? 😩
Actually I love pixhawk 2.4.6 but it have some GPS issue and the cost is very much. In my budget radiolink GPS also come with flight controller but for pixhawk 2.4.6, only come flight controller without GPS. (In AliExpress)

In my opinion, closed hardware isn't a problem. But, their own version of software & firmware might be...

In future i will make obstacle avoidance system.
Is Pixhawk 2.4.6 good than radiolink Pixhawk???

I suggest using original pixhawk cube

Oh! Sorry I can't buy it now 😔 it's too costy, as I am now a begginer. Sorry

I have a hobby king pixhawk + m8n gps + 915mhz telemetry for sale : 9k

Whatsapp me at 7022216674